T1 Cross-over cable 1

[84Mike]

Is this basically the same as a CAT5 cross-over cable?

As in:

Pin 1&2(wh/or,orange) to pin 3&6(wh/gr,green)
Pin 3&6 to pin 1&2

 

[CBB]

No.
Ethernet uses pins 1, 2, 3 and 6
T1's use pins 1, 2, 4 and 5

so for T1 crossover put white orange in 1 and 2 on one side and 4 and 5 on the other.

 

[84Mike]

Thanks. I wasn't thinking of it that way.

 

[CBB]

Last post may be confusing to some.
Here is more detail

Side A Side B
Pin 1 White/orange Pin 1 white/blue
Pin 2 orange/white Pin 2 blue/white
Pin 3 Pin 3
Pin 4 blue/white Pin 4 orange/white
Pin 5 white/blue Pin 5 White/orange
Pin 6 Pin 6
Pin 7 Pin 7
Pin 8 Pin 8

Hope this makes more sense

 

[jimbojimbo]

Simple way to remember it is one end is normal data 568B. Other end put the white/blue on 1/2 put white/orange on 4/5.

James Middleton
ACSCI/ACSCD/MCSE
Xeta Technologies
jim.middleton@xeta.com

 

[lopes1211]

Or....even simpler.... position 1/2 and 4/5 are the 2 pairs. Flip them for a crossover. T1's are not polarity sensitive so you realy dont need to be that careful.

SIMPLE LOOP BACK JACK - take any 8 conductor jack (568a or 568b) and use a peice of cross connect to short all tips together to all rings. i.e. short 1,3,5,7 then short 2,4,6,8.


-CL